Showing posts with label LED. Show all posts
Showing posts with label LED. Show all posts
Friday, February 16, 2024

Shuji Nakamora and his (Juliano) Blue Gallium Nitride LED

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Lots of great stuff in this video:   -- They get the charge carrier thing right:  contrary to many presentations, holes don't really mov...
1 comment:
Sunday, April 11, 2021

RIP Isamu Akasaki -- Shared Nobel Prize for LED -- Analog Guy

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From the obituary in the Washington Post:  In addition to the Nobel Prize, Dr. Akasaki’s honors included a   2009 Kyoto Prize   — Japan’s hi...
Wednesday, February 3, 2021

Shuji Nakamura -- The Inventor of Juliano Blue LEDs

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He is the 2014 winner of the Nobel Prize for Physics.   He is the person who figured out how to make blue light LEDs through the use of an I...
3 comments:
Monday, September 22, 2014

The SWLing Post, Ears To Our World, and the HumanaLight

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Thomas, K4SWL, has a really impressive shortwave listening blog .  Yesterday he was kind enough to post an article about my latest obsessi...
Saturday, July 19, 2014

Gravity Light -- A Potential Power Source for QRP Ops in the Field

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Nice idea. Our book: "SolderSmoke -- Global Adventures in Wireless Electronics" http://soldersmoke.com/book.htm Our coffee m...
1 comment:
Saturday, May 3, 2014

The Guy who Invented the LED

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I'm a big fan of Ira Flatow's "Science Friday" radio program (recommended!) This week, while digging through the archive...
2 comments:
Thursday, December 13, 2012

FITSAT-1 Flashing Morse With LEDs from Orbit

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Very cool:  Japanese students sent up a small satellite.  One of its capabilities is to flash Morse code messages in the visible light ra...
Thursday, October 23, 2008

Lasers, LEDs, Tin-foil Hats, and QRP

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Yesterday I got a very interesting message from Rye, K9LCJ. The map of Tasmania comes from the Modulated Light DX portion of the KA7AOI si...